This product is made of flannel, and it is a multi-purpose hat, scarf, and mask. Therefore, after design and stitching, it cannot be laid flat, and it is a twisted effect, which is not due to quality issues. This product is soft, skin-friendly, breathable, warm, has elasticity, is fashionable, and is suitable for both men and women. It can be used as a mask to prevent the wind, and can protect the neck to keep warm, which is convenient and practical.